使用While循环返回程序的起点

首先,我为这个简单的问题感到抱歉,但我自己无法处理它,因为我刚刚开始编码。
我编写了这个小游戏。我需要重新启动它,如果用户点击 y

我的问题是,我知道如何恢复生命、米和点数,但我无法修复随机数(我们需要找到它才能获胜):它不会改变。

static void Main(string[] args)
{
    int QuestionNumber = (new Random()).Next(1, 10);
    int life = 5;
    int meter = 0;
    int number;
    int points = 100;
    char selection = 'y';

    while (selection == 'y')
    {
        life = 5;
        meter = 0;
        points = 100;

        while (life > 0)
        {
            meter++;
            Console.Write("Enter a number: ");
            number = Convert.ToInt32(Console.ReadLine());

            if (number == QuestionNumber)
            {
                Console.WriteLine($"Congrats! You found the number at {meter}th and got {points} points!");
                break;
            }
            life--;
            points = points - 20;

            if (life == 0)
            {
                Console.WriteLine("Game over!");
            }
            else
            {
                if (number > QuestionNumber)
                {
                    Console.WriteLine("Down");
                }
                else
                {
                    Console.WriteLine("Up");
                }
            }
        }
        Console.Write("Do you want to countinue?(y/n)");
        selection = Convert.ToChar(Console.ReadLine());
    }
    Console.ReadKey();
}